A steam turbine may include a turbine section including a rotor. The liquid crystal display device includes a liquid crystal display panel and a flat lighting device which radiates an illumination light to a back surface of the liquid crystal display panel. To that end, the present invention further provides individual users access to mechanisms by which to create and adjust shared quotas. One of the opposed surfaces of the valve constituting sheets is formed of a non-weldable film that is not welded by welding of the side seals and the partition seal. A carbon fiber ladder segment and tube connectors are also disclosed.